How often should I be increasing my deadlift? Is it ok to add

10 lbs a week for beginners/intermediate. once you get past 400lbs it gets harder

if you can pull it, increase it.
youre not an athlete going through periodization

>>41788897
you should be adding big weight to deadlift
If you really can only add small weight then deadlift less so you can add more every time. Squatting will raise your DL